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不同改性多壁碳纳米管对Cr3+的吸附性能

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崔春月, 郑庆柱, 杨文方. 不同改性多壁碳纳米管对Cr3+的吸附性能[J]. 环境工程学报, 2012, 6(11): 3975-3980.
引用本文: 崔春月, 郑庆柱, 杨文方. 不同改性多壁碳纳米管对Cr3+的吸附性能[J]. 环境工程学报, 2012, 6(11): 3975-3980.
shu
Cui Chunyue, Zheng Qingzhu, Yang Wenfang. Adsorption properties of Cr3+ on multiwall carbon nanotubes modified by different chemical methods[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 3975-3980.
Citation: Cui Chunyue, Zheng Qingzhu, Yang Wenfang. Adsorption properties of Cr3+ on multiwall carbon nanotubes modified by different chemical methods[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 3975-3980.
shu

不同改性多壁碳纳米管对Cr3+的吸附性能

  • 1.

    青岛农业大学资源与环境学院,青岛 266109

  • 基金项目:

    国家自然科学基金资助项目(20907025)

    青岛农业大学博士基金资助项目(630704)

  • 中图分类号: X703

Adsorption properties of Cr3+ on multiwall carbon nanotubes modified by different chemical methods

  • 1.

    College of Resources & Environment, Qingdao Agricultural University, Qingdao 266109, China

  • Fund Project:

  • 摘要: 通过催化裂解法制备多壁碳纳米管,利用不同化学试剂对多壁碳纳米管改性,研究了不同化学改性对多壁碳纳米管表面物理化学特性的影响和Cr3+的吸附特性。结果表明,所制备的多壁碳纳米管孔隙均匀,外径为30~50 nm,长度为0.5~2 μm,经过不同化学改性表面有效地引入了含氧基团。未改性、H2SO4、HNO3、H2SO4-HNO3改性碳纳米管对Cr3+的吸附动力学均符合Langergren模型;吸附等温线均符合Freundlich模型。温度和pH升高均有利于改性多壁碳纳米管对Cr3+的吸附。
    Abstract: Using catalytic splitting decomposition method, multiwalled carbon nanotubes (MWCNTs) were prepared and followed by modification via different chemical reagents. The physicochemical properties and adsorption properties of Cr3+ on MWCNTs modified by different chemical methods were investigated. The porosity of MWCNTs was uniform. The outside diameter and length were 30~50 nm and 0.5~2 μm, respectively. Large amount of oxygenous functional groups was introduced onto the surface of MWCNTs by chemical modification. The adsorption kinetics curves of Cr3+ on unmodified MWCNTs and the MWCNTs modified by H2SO4,HNO3 or H2SO4-HNO3 could be well correlated by Langergren kinetic adsorption model. Their adsorption isotherms for Cr3+ could be well correlated by Freundlich model. Increase of both temperature and pH value were helpful for Cr3+ adsorption on chemical modified MWCNTs.
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  • 收稿日期:  2012-05-24
  • 刊出日期:  2012-11-09
崔春月, 郑庆柱, 杨文方. 不同改性多壁碳纳米管对Cr3+的吸附性能[J]. 环境工程学报, 2012, 6(11): 3975-3980.
引用本文: 崔春月, 郑庆柱, 杨文方. 不同改性多壁碳纳米管对Cr3+的吸附性能[J]. 环境工程学报, 2012, 6(11): 3975-3980.
shu
Cui Chunyue, Zheng Qingzhu, Yang Wenfang. Adsorption properties of Cr3+ on multiwall carbon nanotubes modified by different chemical methods[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 3975-3980.
Citation: Cui Chunyue, Zheng Qingzhu, Yang Wenfang. Adsorption properties of Cr3+ on multiwall carbon nanotubes modified by different chemical methods[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 3975-3980.
shu

不同改性多壁碳纳米管对Cr3+的吸附性能

  • 1. 青岛农业大学资源与环境学院,青岛 266109
  • 收稿日期:  2012-05-24
基金项目:

国家自然科学基金资助项目(20907025)

青岛农业大学博士基金资助项目(630704)

摘要: 通过催化裂解法制备多壁碳纳米管,利用不同化学试剂对多壁碳纳米管改性,研究了不同化学改性对多壁碳纳米管表面物理化学特性的影响和Cr3+的吸附特性。结果表明,所制备的多壁碳纳米管孔隙均匀,外径为30~50 nm,长度为0.5~2 μm,经过不同化学改性表面有效地引入了含氧基团。未改性、H2SO4、HNO3、H2SO4-HNO3改性碳纳米管对Cr3+的吸附动力学均符合Langergren模型;吸附等温线均符合Freundlich模型。温度和pH升高均有利于改性多壁碳纳米管对Cr3+的吸附。

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